Capital Gains Tax: Old vs New
Compare tax paid and real (after-tax, inflation-adjusted) returns on shares under Australia’s existing 50% discount regime versus a proposed indexed-cost-base regime with a 30% minimum rate.
Comparison
| Existing tax 50% discount on net nominal gain | New tax Indexed cost base, min 30% rate | Δ (new − old) | |
|---|---|---|---|
| Tax paid | |||
| Effective tax on nominal gain | |||
| After-tax real wealth | |||
| Real return (total) |
Illustrative model only — not financial or tax advice. Both regimes assume holdings > 12 months and a single disposal at the end of the period. Marginal rates reflect 2025–26 resident brackets including the 2% Medicare levy.